html, body, div, span, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
abbr, address, cite, code,
dfn, em, img, ins, kbd, q, samp,
small, strong, sub, sup, var,
b, i,a,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, figcaption, figure,
footer, header, hgroup, menu, nav, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    vertical-align: baseline;
    background: transparent;
    text-decoration: none;
    list-style-type: none;
}

* {
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;

}
html{
    font-size: 14px;
    height: 100%;
}
body {
    margin: 0 auto;
    background-color: #fff;
    font-family: -apple-system-font,Helvetica Neue,sans-serif;
    color: #333;
    -webkit-text-size-adjust: none;
    width: 100%;
    max-width: 750px;
    height: 100%;
}
em, i, strong{
    font-style: normal;
}
p {
    text-align: justify;
    word-wrap: break-word;
    line-height: 1.5;
    letter-spacing: 1px;
}
a{
    color: #333;
}
input{
    font-family: "Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Arial,sans-serif;
}
textarea{
    font-family: "Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑",Arial,sans-serif;
}
input:-webkit-autofill,
textarea:-webkit-autofill,
select:-webkit-autofill {
    -webkit-box-shadow: 0 0 0 1000px white inset;
}
button{
    outline: 0;
}
.clearfix:after {
    content: "";
    display: block;
    height: 0;
    visibility: hidden;
    clear: both;
}
.clearfix {
    zoom: 1;
}
.fl-l{
    float: left;
}
.fl-r{
    float: right;
}
.flex {
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-box;
    display: -webkit-flex;
    display: flex;
    width: 100%;
}
.mask{
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(61,70,83,.7);
    z-index: 180;
}
.hide{
    display: none;
}
img {
    max-width: 100%;
}
.container{
    margin: 0 auto;
}
